SMLJ6.5CE3/TR13

Part Overview

The SMLJ6.5CE3/TR13 is a Transient Voltage Suppressor (TVS) diode manufactured by Microchip Technology, designed for general-purpose overvoltage protection applications. This bidirectional Zener-type device operates in the 6.5V reverse standoff voltage range and is packaged in the industry-standard DO-214AB (SMC) surface mount format. The component is actively produced and RoHS3 compliant, with unlimited moisture sensitivity rating. Equivalent and substitute parts are available from multiple manufacturers, offering alternative electrical performance characteristics and packaging configurations suitable for similar protection circuit requirements.

Substiute Parts

SMLJ6.5CE3/TR13

Microchip TechnologyIn Stock: 1198SMLJ6.5CE3/TR13 Datasheet

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SMCJ6.5CA

EVVO SemiIn Stock: 38201SMCJ6.5CA Datasheet

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SMCJ6.5CA-13-F

Diodes IncorporatedIn Stock: 29383SMCJ6.5CA-13-F Datasheet

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SMCJ6.5CA-TP

Micro Commercial CoIn Stock: 3408SMCJ6.5CA-TP Datasheet

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SMCJ6V5CA

Taiwan Semiconductor CorporationIn Stock: 12487SMCJ6V5CA Datasheet

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SMDJ6.5CA

Alpha & Omega Semiconductor Inc.In Stock: 61373SMDJ6.5CA Datasheet

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SMLJ6.5CA

Bourns Inc.In Stock: 2053SMLJ6.5CA Datasheet

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SMLJ6.5CA-TP

Micro Commercial CoIn Stock: 6157SMLJ6.5CA-TP Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SMLJ6.5CE3/TR13 are selected based on electrical parameter compatibility within defined tolerance ranges. The critical electrical parameters that determine substitutability are:

• Voltage - Reverse Standoff (Typ): 6.5V (all substitutes match this specification)
• Voltage - Breakdown (Min): 7.22V (acceptable range for all listed substitutes)
• Voltage - Clamping (Max) @ Ipp: 11.2V to 12.3V (all substitutes within acceptable range)
• Current - Peak Pulse (10/1000µs): 133.9A to 267.9A (covers original specification of 243.9A)
• Power - Peak Pulse: 300W to 3000W (original part rated 300W; higher power ratings provide improved margin)
• Mounting Type: Surface Mount (all substitutes are surface mount)
• Package / Case: DO-214AB, SMC (all substitutes use compatible SMC package family)

Substitutes are grouped into two electrical categories: lower peak pulse current devices (133.9A to 134A with 1500W peak power) and higher peak pulse current devices (267.9A with 3000W peak power). Both categories meet the fundamental voltage protection parameters of the original part.

Parameter Comparison

Engineering Selection Recommendations

All listed substitute parts are actively produced and RoHS3 compliant, meeting standard environmental and sustainability requirements. The primary selection criterion depends on application peak pulse current requirements and power dissipation margins.

For applications with peak pulse currents up to 134A and 1500W peak power dissipation capacity, substitutes SMCJ6.5CA (EVVO Semi), SMCJ6.5CA-13-F (Diodes Incorporated), SMCJ6.5CA-TP (Micro Commercial Co), and SMCJ6V5CA (Taiwan Semiconductor Corporation) provide equivalent electrical performance with improved power handling compared to the original 300W specification.

For applications requiring higher peak pulse current capability (267.9A) with 3000W peak power dissipation, substitutes SMDJ6.5CA (Alpha & Omega Semiconductor Inc.), SMLJ6.5CA (Bourns Inc.), and SMLJ6.5CA-TP (Micro Commercial Co) offer enhanced performance margins. The SMLJ6.5CA-TP variant extends the operating temperature range to 175°C, providing thermal headroom for high-temperature environments.

All substitutes maintain the critical voltage protection parameters: 6.5V reverse standoff voltage, 7.2V–7.22V breakdown voltage minimum, and 11.2V clamping voltage. The 1.1V reduction in clamping voltage (from 12.3V to 11.2V) across substitute parts represents a tighter protection envelope, suitable for sensitive circuits requiring lower transient voltage peaks.

Frequently Asked Questions (FAQ)

Q: Can I directly replace the SMLJ6.5CE3/TR13 with any of the listed substitutes?

A: Direct replacement depends on your application's peak pulse current and power dissipation requirements. All substitutes share identical reverse standoff voltage (6.5V), breakdown voltage (7.2V–7.22V), and DO-214AB/SMC package compatibility. Voltage clamping differs slightly: the original part clamps at 12.3V maximum, while substitutes clamp at 11.2V. This lower clamping voltage may provide improved protection for sensitive circuits but must be verified against your circuit design specifications.

Q: What is the difference between the lower current (134A) and higher current (267.9A) substitute groups?

A: The two groups differ in peak pulse current handling and power dissipation capacity. Lower current substitutes (SMCJ variants) handle 134A peak pulse with 1500W power rating. Higher current substitutes (SMDJ6.5CA and SMLJ series) handle 267.9A peak pulse with 3000W power rating. Selection depends on whether your transient voltage events exceed 134A peak current or require margin beyond 1500W power dissipation. Higher current substitutes provide increased design margin for unpredictable transient environments.

Q: Are all substitutes available in the same packaging?

A: All substitutes use the DO-214AB/SMC surface mount package, which is mechanically and electrically compatible with the original part. However, packaging suffix variations indicate different reel formats: standard Tape & Reel (TR), Cut Tape (CT), and Digi-Reel formats. These format differences affect order quantity minimums and logistics but do not impact electrical performance or PCB soldering compatibility.

Q: Why do some substitutes have extended temperature ratings (175°C vs. 150°C)?

A: Extended temperature ratings (SMCJ6.5CA-TP and SMLJ6.5CA-TP) provide operational capability to 175°C junction temperature, compared to the standard 150°C range. This extended rating is relevant for high-ambient-temperature applications or designs with elevated component heating. If your circuit operates within the standard -55°C to 150°C range, standard-rated substitutes are appropriate.

Q: Which substitute should I select for a new design?

A: For new designs, prioritize substitutes with active product status and full temperature specification documentation (avoiding parts with unspecified operating temperature). Consider SMDJ6.5CA (Alpha & Omega Semiconductor Inc.) or SMLJ6.5CA (Bourns Inc.) for applications requiring robust peak pulse current handling with 3000W dissipation capacity. For space-constrained or lower-current applications, SMCJ6.5CA-13-F (Diodes Incorporated) offers established supply chain availability and full electrical parameter transparency.